Buffer Overflow Vulnerability in Apple iOS and macOS Products
CVE-2026-43776

7.8HIGH

Key Information:

Vendor

Apple
Status
iOS And iPad OS
Mac OS
Vendor
CVE Published:
27 July 2026

What is CVE-2026-43776?

A vulnerability exists in Apple's iOS and macOS platforms due to improper bounds checking, which can lead to buffer overflow issues. When processing specially crafted files, the vulnerability may result in unexpected application termination or allow the execution of arbitrary code. This issue has been addressed in the latest versions of iOS, iPadOS, and macOS, underscoring the importance for users to update their devices to the latest software to mitigate these risks.

Affected Version(s)

iOS and iPadOS 0 < 26.6

macOS 0 < 15.7.8

macOS 0 < 26.6

References

https://support.apple.com/en-us/128066
https://support.apple.com/en-us/128067
https://support.apple.com/en-us/128071

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.